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Microbial patterns in pooled subgingival plaque samples from young adults with advanced marginal periodontitis
1Department of Microbiology, Royal Dental College, Copenhagen, Denmark.
Scandinavian Journal of Dental Research
|October 1, 1990
Summary
Advanced periodontitis in young adults shows unique subgingival bacterial profiles. Each patient harbors a distinct microflora, with spirochetes exhibiting the least variation across individuals.
Area of Science:
- Microbiology
- Periodontology
- Oral Health
Background:
- Subgingival bacterial profiles vary across clinical periodontitis categories.
- Understanding these profiles is crucial for diagnosing and treating marginal periodontitis.
Purpose of the Study:
- To investigate the subgingival microflora in young adults with advanced marginal periodontitis.
- To characterize the bacterial composition of diseased periodontal sites.
Main Methods:
- Analysis of pooled subgingival plaque samples from 12 patients with advanced periodontitis.
- Microscopic examination (phase-contrast) and cultivation on enriched/selective media.
- Identification of specific bacterial genera and species, including ultrastructural spirochete identification.
Main Results:
- Each patient presented a unique cultivable subgingival microflora.
- Proportions of black-pigmented Bacteroides sp., B. gingivalis, F. nucleatum, and others were calculated.
- Spirochetes showed the least variation, with dominant morphotypes observed in most individuals.
Conclusions:
- Advanced marginal periodontitis is associated with distinct, patient-specific subgingival bacterial communities.
- Spirochetes represent a conserved bacterial group within the subgingival plaque of affected individuals.
- Further research into these specific microbial profiles may inform targeted therapeutic strategies.